Hej jeg har en database class som jeg har lavet, men jeg er ikke helt sikker på om den er okay.

class Database {
   
    private $mysqli;
   
    private $config, $bool = false, $session_id;
   
    public function __construct($set_host, $set_user, $set_pass, $set_name)
    {
        if ($this->set_session())
        {           
            $this->mysqli  = new mysqli($set_host, $set_user, $set_pass, $set_name);   
           
            if ($this->mysqli->connect_error)
            {
                die('Your connection are closed, because some information was false.' . $this->mysqli->connect_error);
            }
        }
    }
   
    private function set_session()
    {
        ob_start();
       
        return session_start();
       
        $this->session_id = session_id();
       
        if (strlen($this->session_id) >= 1)
        {
            return true;
        }
    }
}   
$database = new Database('localhost','root','root','framework');

class Connection {
   
    private $mysqli;
   
    public function __construct($set_host, $set_user, $set_pass, $set_name)
    {
        if ($this->set_session())
        {       
            $this->mysqli = new mysqli($set_host, $set_user, $set_pass, $set_name);   
           
            if ($this->mysqli->connect_error)
            {
                die('Your connection are closed, because some information was false.' . $this->mysqli->connect_error);
            }
        }
    }
   
    private function set_session()
    {
        ob_start();
       
        session_start();
       
        if (strlen(session_id()) >= 1)
        {
            return true;
        }
    }
}   
$database = new Connection('localhost','root','root','framework');

class Connection {
   
    private $mysqli;
   
    public function __construct($set_host, $set_user, $set_pass, $set_name)
    {
        $this->mysqli = new mysqli($set_host, $set_user, $set_pass, $set_name);   
           
        if ($this->mysqli->connect_error)
        {
            die('<pre style="text-align:center;">Your connection are closed, because some information was false. </pre><pre style="text-align:center;">' . $this->mysqli->connect_error . '</pre>');
        }
    }
}   

$database = new Connection(DBHOST, DBUSER, DBPASS, DBNAME);